Hi,

I have a problem where I sometimes get a NullPointerException when
calling the call-method of the Function-class in rhino.

The case is that we are running a J2EE-application inside JBOSS
application-server, a couple of Scripts are compiled using
Context.compileReader and then cached in memory, script-functions are
then called using the Function.call-method.

This normally works fine but sometimes the Function.call gives a
NullPointerException without further info. When this happens the
Script stops working, always returning NullPointerException when
Functions are called until the JVM is restarted, then the same script
works again, until it gets a NullPointerException again...
The problem is very hard to reproduce, happens maybe once a week under
heavy load, have not yet found a pattern for what causes it to happen.

Any ideas what can go wrong and give a NPE in the Function.call-method
and need a JVM-restart to start working again? I have two applications
inside the application-server that includes the js.jar, could there be
a classloading issue? I am using rhino 1.5R5.

Thanks
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